Improved apparatus for the manufacture of lamp-black



@uiten tatrs Quitar @fitta MAHLON j MATLACK, 4OF' BRIDESBURG, (PHILADELPHIA,) PENNSYLVANIA.

TO -ALL WHOM IT MAY GONGERN Letters .Patent No. 75,943, dated Marcil 24, 1868.

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Be it known that I, MAHLON MATLACK, of Bridesburg,(Philadelphia,) in the county of Philadelphia, and State of Pennsylvania, have invented a new,and improved. Lamp-Black Apparatus; and I do-hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and usla the same,reference being had' to the accompanying drawings, forming part of this specification, inv which-- Figure 1 represents-a longitudinal vertical section of my improved lamp-black apparatus.

Figure 2 is a vertical transverse section of the same, taken on the plane of the line a: x, fig. 1.

Figure 3 is an under side view of the block in which the tire-pan is set.

Similar letters of reference indicate corresponding parts.

I This invention relates to a new machine for producing lamp-black from suitable material, andr consists in the construction and'arrangernent of the furnace and of the detaining-devices, by which the lamp-black is separated from the gases, and ofthe roof of the structure, all parts being so arranged that the operation of the apparatus willbe complete, that no lamp-black will be allowed to escape with the gases, that no explosive gases can `accumulate in any portion of the apparatus, and that the i'ire cannot reach any combustible portion of the apparatus.

A, in the drawing, represents the building or structure in which the` gases containing the lamp-black areA liberated. The roof of the building is made of slate or sheet-metal plates fastened to wooden beams. The slate or metal plates B B are fastenedto the under side of the k wooden beamsl C, as shown in lrigs. 1 and 2, for

the purpose of preventing the flame in the building from reaching `the wooden beams. A The slates or plates B are either nailed to the beams by means of nails a a clinched over the beams, as shown, or they'are supported by metal bars 6 Z2, which are by means of staples er bolts cc suspended from the beams, as is also clearly shown in'g. 1, or otherwise. The ame in the building will thus strike against the incombustible lower face of the slates or metal plates, and in this manner'a roof is obtained which is -safe against danger from fire, and which is still light and cheaply made.V D represents a partitionnrranged across the 'building A to form the `dead-air chamber E for the ascent of the gas. F represents the furnace. 1 The same is arranged oppositeto'the partition yD, as shown, and has a bed or block, G, in which the pan H is set. The crown d above the pan is exceedingly low, as have found that less of the lamp-black is burned if the crown is low, than when it is high above the pan. Some distance beygnd the pan the crown may be gradiially or suddenlyV raised, as indicated in figs. 1'

and 2, in which a step, e, is shown for that purpose.A In the bed Gr is arranged a channehf, which carries heavy gases that may accumulate at the bottom of the building up to the fire again through crevices that are always formed around the pan. In this manner such dangerous gases will be burned, and they can therefore not explode under the furnace, which they do if-conned in the ordinary manner. The pan islled through an pening, g, in the furnace, and when its contents are lighted, the opening g is closed by a slide, as shown.

rIhe gases, libcrated'from the contents of the pan, enter the dead-air chamber through a hol'e,.z', in the partition D, and strike against an inclined plat\e,j, arranged opposite that opening, as shown in Hg. 1. V'Ihey then will rise in the.cha1nber" `E. Y, In the chamber E is arranged a perforated damper, I, which has a plate, Z, elevated somewhat above its hole, as shown. When the gas strikes against the`. plate Z, i't is suddenly delected, and a large portion of the lamp-black contained in it is discharged upon the damper. The same effect is produced by the plate j. The damper can be turned whenever desired to discharge its-load of black upon the floor of the chamber El A. series of. such dampers, I, may bevused, one abovethe other, if'desired. From the uprightv chamber E, the gas enters a horizontal duc, J, iivhieh the detaning-shelves mm are arranged alternately on the top and 1cottom ofthe flue, as sh'own. By the same the last particles of the lamp-black are caused to leave `the gas which then escapes through a pipe, a. Instead of the upper arrangement of the air-chamber E and it's appendages, or in conjunction with the same, may be employed a fan, L. lIhe same would serve to draw the gas down and to force it into 'a porous bag or vessel, M, through the walls of which the lamp-black cannot pass, -while the gas can easily escape through the same. In this manner the lamp-black would at once be all thoroughly separated from the gas.

'- Having thus described my invention, what I claim` as new, and desire to secureV by Letters Patent, is

1. Suspending the slates or sheets, which form the root` of a lamp-black apparatus, from the (voeden beams C C ofv the same, substantially as and for the purpose herein shown and described.

2. Making the crown of the furnace lowl above the pan H', and gradually or suddenly raising it at some distance from the pan, as set forth. 4

3. Providing the bed G, which supports the pan H, -with a gas-cl1annel,f, substantially as and for the purpose herein shown and described.

4. Thednclined plate j, arranged across the opening to the dead-air vchamber E of a lump-black apparatus, substantially as and for the purpose herein shown and described.

5. The perforated damper I, when provided ivith'a plate, Z, above the perforation, as specified.

6. The combination, with the dead-air chamber E having the damper I, of the horizontal flue J having the alternate up-and-down shelves m, as set forth. v

7. The arrangement of the fan L, or its equivalent, by which the gas is forced into a porous vessel or bag in which the lamp-black is detained, as set forth.

MAHLON MATLACK Witnesses: .f

J. ALIsoN FRASER, ALEX. F. ROBERTS. 

